Finding the Fourth Proportional to 1,174.41, 1,620.72 and 677.21

Step by Step Solution

1. Step 1: Write the proportion equation
   1,174.41 : 1,620.72 = 677.21 : x
2. Step 2: Convert to fraction form
   1,174.41/1,620.72 = 677.21/x
3. Step 3: Cross multiply
   1,174.41x = 1,620.72 × 677.21
4. Step 4: Simplify right side
   1,174.41x = 1,097,559.69
5. Step 5: Solve for x
   x = 1,097,559.69/1,174.41
6. Step 6: Final answer
   x = 934.56